/*

This file is part of Ext JS 4

Copyright (c) 2011 Sencha Inc

Contact:  http://www.sencha.com/contact

Commercial Usage
Licensees holding valid commercial licenses may use this file in accordance with the Commercial Software License Agreement provided with the Software or, alternatively, in accordance with the terms contained in a written agreement between you and Sencha.

If you are unsure which license is appropriate for your use, please contact the sales department at http://www.sencha.com/contact.

*/
/**
 * @class FeedViewer.FeedDetail
 * @extends Ext.panel.Panel
 *
 * Shows the details of a particular feed
 * 
 * @constructor
 * Create a new Feed Detail
 * @param {Object} config The config object
 */
Ext.define('FeedViewer.FeedDetail', {

    extend: 'Ext.panel.Panel',
    alias: 'widget.feeddetail',

    border: false,
    
    initComponent: function(){
        this.display = Ext.create('widget.feedpost', {});
        Ext.apply(this, {
            layout: 'border',
            items: [this.createGrid(), this.createSouth(), this.createEast()]
        });
        this.relayEvents(this.display, ['opentab']);
        this.relayEvents(this.grid, ['rowdblclick']);
        this.callParent(arguments);
    },

    /**
     * Loads a feed.
     * @param {String} url
     */
    loadFeed: function(url){
        this.grid.loadFeed(url);
    },

    /**
     * Creates the feed grid
     * @private
     * @return {FeedViewer.FeedGrid} feedGrid
     */
    createGrid: function(){
        this.grid = Ext.create('widget.feedgrid', {
            region: 'center',
            dockedItems: [this.createTopToolbar()],
            flex: 2,
            minHeight: 200,
            minWidth: 150,
            listeners: {
                scope: this,
                select: this.onSelect
            }
        });
        this.loadFeed(this.url);
        return this.grid;
    },

    /**
     * Fires when a grid row is selected
     * @private
     * @param {FeedViewer.FeedGrid} grid
     * @param {Ext.data.Model} rec
     */
    onSelect: function(grid, rec) {
        this.display.setActive(rec);
    },

    /**
     * Creates top controller toolbar.
     * @private
     * @return {Ext.toolbar.Toolbar} toolbar
     */
    createTopToolbar: function(){
        this.toolbar = Ext.create('widget.toolbar', {
            cls: 'x-docked-noborder-top',
            items: [{
                iconCls: 'open-all',
                text: 'Open All',
                scope: this,
                handler: this.onOpenAllClick
            }, '-', {
                xtype: 'cycle',
                text: 'Reading Pane',
                prependText: 'Preview: ',
                showText: true,
                scope: this,
                changeHandler: this.readingPaneChange,
                menu: {
                    id: 'reading-menu',
                    items: [{
                        text: 'Bottom',
                        checked: true,
                        iconCls:'preview-bottom'
                    }, {
                        text: 'Right',
                        iconCls:'preview-right'
                    }, {
                        text: 'Hide',
                        iconCls:'preview-hide'
                    }]
                }
            }, {
                iconCls: 'summary',
                text: 'Summary',
                enableToggle: true,
                pressed: true,
                scope: this,
                toggleHandler: this.onSummaryToggle
            }]
        });
        return this.toolbar;
    },

    /**
     * Reacts to the open all being clicked
     * @private
     */
    onOpenAllClick: function(){
        this.fireEvent('openall', this);
    },

    /**
     * Gets a list of titles/urls for each feed.
     * @return {Array} The feed details
     */
    getFeedData: function(){
        return this.grid.store.getRange();
    },

    /**
     * @private
     * @param {Ext.button.Button} button The button
     * @param {Boolean} pressed Whether the button is pressed
     */
    onSummaryToggle: function(btn, pressed) {
        this.grid.getComponent('view').getPlugin('preview').toggleExpanded(pressed);
    },

    /**
     * Handle the checked item being changed
     * @private
     * @param {Ext.menu.CheckItem} item The checked item
     */
    readingPaneChange: function(cycle, activeItem){
        switch (activeItem.text) {
            case 'Bottom':
                this.east.hide();
                this.south.show();
                this.south.add(this.display);
                break;
            case 'Right':
                this.south.hide();
                this.east.show();
                this.east.add(this.display);
                break;
            default:
                this.south.hide();
                this.east.hide();
                break;
        }
    },

    /**
     * Create the south region container
     * @private
     * @return {Ext.panel.Panel} south
     */
    createSouth: function(){
        this.south =  Ext.create('Ext.container.Container', {
            layout: 'fit',
            region: 'south',
            split: true,
            flex: 2,
            minHeight: 150,
            items: this.display
        });
        return this.south;
    },

    /**
     * Create the east region container
     * @private
     * @return {Ext.panel.Panel} east
     */
    createEast: function(){
        this.east =  Ext.create('Ext.panel.Panel', {
            layout: 'fit',
            region: 'east',
            flex: 1,
            split: true,
            hidden: true,
            minWidth: 150,
            border: false
        });
        return this.east;
    }
});
